Marble retrieves routes from gosmore, if the gosmore package is installed and a gosmore map lies at ~/.local/share/marble/maps/earth/gosmore/gosmore.pak.
mkdir -p ~/.local/share/marble/maps/earth/gosmore/ cd ~/.local/share/marble/maps/earth/gosmore/ wget http://nienhueser.de/marble/gosmore.pak.bz2 bunzip2 gosmore.pak.bz2
mkdir -p ~/.local/share/marble/maps/earth/gosmore/ cd ~/.local/share/marble/maps/earth/gosmore/ wget http://downloads.cloudmade.com/asia/india/india.osm.bz2 bzcat india.osm.bz2 | gosmore rebuild